I have a 1Tb mybook world edition connected via network interface and acting as a DLNA server for my home media entertainment system. I had installed TwonkyMedia over it which server the purpose successfully.

I usually copy large files to it (600MB ~ 4GB) via Windows File Manager, sometimes the power goes out or a network connection breakage can happen during a lengthy file transfer. In MS Windows it usually results in lost clusters and file fragments and FAT table corruption which can be cured via CHKDSK.

I want to ask what is the behaviour in linux and what is the way to check the file system health and integrity on MyBook. I tried running fsck via WINSCP secure shell access to mybook, but it results in a warning that drive is mounted and running fsck can cause data loss.

Can someone please guide me with exact steps and commands about how to achieve the purpose. Also tell me how much times would it take for a 1TB disk.